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    • 3. 发明授权
    • Throw-measuring football
    • 投掷足球
    • US5779576A
    • 1998-07-14
    • US700002
    • 1996-08-20
    • Jay Smith, IIIKevin HudsonBill Hudson
    • Jay Smith, IIIKevin HudsonBill Hudson
    • A63B24/00A63B43/00A63B65/00
    • A63B65/00A63B2208/12A63B2220/40A63B2220/833A63B43/002
    • The invention discloses an amusement projectile characterized in a first embodiment by a football shape which is thrown by a user and which comprises electronics therein to measure and display the distance traveled by the thrown ball to the point of impact with the ground or to another user. Using an accelerometer in cooperation with a microprocessing board disposed within the ball, the distance traveled is determined by measuring the initial velocity and the time recorded during the flight of the ball based upon changes in the acceleration of the ball, and an inset liquid crystal display screen mounted on the football is used to display the distance as well as time of flight and a nondimensional thrust value. A toggle button is used to alternately display the "flight characteristics," which are distinguished by the position of a decimal in the three digit display. The toggle button also serves as an activation button which is depressed immediately prior to throwing and remains depressed until release of the ball, and which starts the timer and the accelerometer measurements upon its release. From these two measurements and data stored in a read only memory chip, the microprocessing board calculates the above identified values and causes those values to be displayed on the display screen. The invention includes an automatic shutoff characteristic which disconnects the battery after a predetermined period of inactivity.
    • 本发明公开了一种娱乐弹丸,其特征在于第一实施例中由用户投掷的足球形状,其中包括电子装置,用于测量和显示被抛出的球与地面或另一使用者撞击的距离。 使用与设置在球内的微处理板配合的加速度计,通过基于球的加速度的变化测量球的飞行期间记录的初始速度和记录时间来确定行进的距离,以及插入液晶显示器 屏幕安装在足球上用于显示距离以及飞行时间和无量纲推力值。 切换按钮用于交替显示“飞行特征”,它们通过三位数显示中的十进制位置进行区分。 切换按钮还用作在投掷之前立即按下的激活按钮,并保持按压直到释放球,并且在其释放时启动定时器和加速度计测量。 从存储在只读存储器芯片中的这两个测量值和数据,微处理器计算上述识别值并使这些值显示在显示屏上。 本发明包括在预定的不活动时段之后断开电池的自动关闭特性。